When populating a table how does one add a foreign key? Is it done just by adding the foreign key id? Thanks

Answer 1

مرحبا

Answer 2

A foreign key comes from a fully normalized database structure. That means the value in one table resolves to a primary key in another table.

For example, in a retail transaction, you go to the store and buy some goods. The receipt is a collection of those goods and has its own receipt number. The foreign keys on the receipt would be the individual products purchased in the transaction.

Answer 3

ya